Home / 5,270.41-7,910.95-2,639.80

Finding the Fourth Proportional to 5,270.41, 7,910.95 and 2,639.80

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Solution

The fourth proportional to 5,270.41, 7,910.95 and 2,639.80 is: 3,962.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,270.41 : 7,910.95 = 2,639.80 : x
  2. Step 2: Convert to fraction form
    5,270.41/7,910.95 = 2,639.80/x
  3. Step 3: Cross multiply
    5,270.41x = 7,910.95 × 2,639.80
  4. Step 4: Simplify right side
    5,270.41x = 20,883,325.81
  5. Step 5: Solve for x
    x = 20,883,325.81/5,270.41
  6. Step 6: Final answer
    x = 3,962.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.